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Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

For what value of (y) is 3^3/3^y =1/9

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?